diff options
Diffstat (limited to 'freebsd/sys/net/if_bridge.c')
| -rw-r--r-- | freebsd/sys/net/if_bridge.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/freebsd/sys/net/if_bridge.c b/freebsd/sys/net/if_bridge.c index 4bfb67a8..2544c4f5 100644 --- a/freebsd/sys/net/if_bridge.c +++ b/freebsd/sys/net/if_bridge.c @@ -137,6 +137,14 @@ __FBSDID("$FreeBSD$"); #include <net/route.h> +#ifdef INET6 +/* + * XXX: declare here to avoid to include many inet6 related files.. + * should be more generalized? + */ +extern void nd6_setmtu(struct ifnet *); +#endif + /* * Size of the route hash table. Must be a power of two. */ @@ -774,7 +782,7 @@ bridge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) } args; struct ifdrv *ifd = (struct ifdrv *) data; const struct bridge_control *bc; - int error = 0; + int error = 0, oldmtu; switch (cmd) { @@ -820,12 +828,24 @@ bridge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) break; } + oldmtu = ifp->if_mtu; BRIDGE_LOCK(sc); error = (*bc->bc_func)(sc, &args); BRIDGE_UNLOCK(sc); if (error) break; + /* + * Bridge MTU may change during addition of the first port. + * If it did, do network layer specific procedure. + */ + if (ifp->if_mtu != oldmtu) { +#ifdef INET6 + nd6_setmtu(ifp); +#endif + rt_updatemtu(ifp); + } + if (bc->bc_flags & BC_F_COPYOUT) error = copyout(&args, ifd->ifd_data, ifd->ifd_len); |